%0 Journal Article %A Yu. A. Aminov %T Divergence properties of the curvatures of a~vector field and of a~family of surfaces %J Matematičeskie zametki %D 1968 %P 103-111 %V 3 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1968_3_1_a12/ %G ru %F MZM_1968_3_1_a12